: I live less than an afternoon's drive from Canada. What is the status of low flow toilets in Canada? Are they mandated or optional there? Can I buy 'high' flow toilets there and have my plumber install them for me here?

3-1/2 gallon wc's are still legal in eastern Canada. However, you can purchase locally a pressure-assisted WC such as the Eljer Aquasaver. That toilet is as quiet as a gravity WC and has the largest water spot and trapway -- which means cleaner bowl and less clog vulnerability.